Tamper and like impact tool



Feb. 18, 1930. c, JACKSON 1,747,939

TAMPER AND LIKE IMPACT TOOL Original Filed Dec. 22, 1927 Patented Feb.18, 1930 UNITED STATES CORWILL JACKSON, OF CHICAGO, ILLINOIS TAMPER ANDLIKE IMPACT TOOL Original application filed December 22, 1927, SerialNo. 241,861. latent No. 1,716,638, dated June 11, 1929.

Divided and this application filed December 6, 1928. Serial No. 824,806.

This invention relates to an improved tool or machine for tamping theballast of railway ties and the like such as illustrated in myapplication for Letters Patent, Serial No.

241,861, filed December 22, 1927, Patent No.

1,716,638, J une 11, 1929, this being a division of that application. a

The main object of this invention is to provide a tool or machine ofthis class which is very elficient and easily manipulated, en-

abling the accomplishment of a large'amount of work with a minimum ofeffort on the part of the workman.

Objects relating to details and economies is of construction andoperation of my invention will appear from the description to follow.The invention is defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention isillustrated in the accompanying drawing, in which:

Fig. 1 is a side elevation view-of a tool for tamping railwaytiesembodying the features of my invention partially in section on line1-1 of Fig. 2.

Fig. 2 is an end elevation view. The structure illustrated in theaccompanying drawing comprises a body member 1 of a general invertedT-shape having a handle 2 'connected to the upper end thereof. Eachsiliently supported by the coiled spring 9.

nism is such that the plungers are rapidly.

The tamping blades 10 are mounted on the outer' ends of the impactmembers.

- The source of actuating fluid and the control valve mechanism are notillustrated but suitable connections for such fluidare-providedat11and12. I

It will be understood that the valve mechareciprocated, imparting aseries of blows to the impact members and thereby rapidly vibrating theblades.

The tool or machine 1s easily manipualted,

the blades being spaced so that they may be placed astride a tie and bya rocking movement, the ballast is rapidly and effectively tamped fromboth sides of a tie and with comparatively little eifort on the part ofthe operator. I

I have illustrated and described my improvements as I have embodied thesame in a tietamper. I have not attempted to illustrate certain otherembodiments or adaptations as I believe this disclosure will enablethose skilled in the art to embody or adapt my improvements as may bedes1red.

Having thus described my invention, what I claim as new and desiretosecure by Letters Patent, is:

1. In a structure of the class described, the combination of a bodymember provided with a handle, a pair of pneumatic hammer cylindersmounted on said handle and provided with plungers, impact membersarranged to reciprocate through the lower'ends of said cylinders andprovided with impact heads coacting with said plungers, coiled springsarranged within said cylinders between said impact heads and the ends ofthe cylinders, and tamper blades mounted on the outer ends of saidimpact members in opposed relation.

2. In a structure of the class described, the combination of a bodymember provided with a handle, a pair of pneumatic hammer cylindersmounted onsaid bod and provided with plungers, impact mem ersoperatively associated with said plungers, a return spring for saidimpact members, and tamper blades mounted on the said impact members.

3. In a structure of the class described, the combination of a bodymember provided with a handle, a pair of impact engines mounted on saidbody, impact members operatively associated with said impact engines, areturn spring for said impact members, and tools mounted on the saidimpact members.

In witness whereof I have hereunto set my hand. CORWILL JACKSON.

